ASP.NET

<% @ServiceHost Language=C# Debug="true" Service="GeometryService" CodeBehind="~/App_Code/Service.cs" %>

<?xml version="1.0"?>
 
<configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
  <system.serviceModel>
    <services>
      <!-- Before deployment, you should remove the returnFaults behavior configuration to avoid disclosing information in exception messages -->
      <service name="GeometryService" behaviorConfiguration="GeometryServiceBehavior">
        <endpoint contract="IGeometryService" binding="wsHttpBinding"/>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="GeometryServiceBehavior" >
          <serviceDebug includeExceptionDetailInFaults="true" />
          <serviceMetadata httpGetEnabled="true" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>
 
  <system.web>
    <compilation debug="true"/>
  </system.web>
 
 </configuration>

using System;
using System.ServiceModel;
using System.Runtime.Serialization;
 
// A WCF service consists of a contract (defined below as IMyService, DataContract1), 
// a class which implements that interface (see MyService), 
// and configuration entries that specify behaviors associated with 
// that implementation (see <system.serviceModel> in web.config)
 
[ServiceContract()]
public interface IGeometryService
{
 [OperationContract]
 int GetArea(Rectangle rect);
 [OperationContract]
 int GetPerimeter(int width, int height);
}
 
public class GeometryService : IGeometryService
{
 public int GetArea(Rectangle rect)
 {
  return rect.Area();
 }
 
 public int GetPerimeter(int width, int height)
 {
  Rectangle rect = new Rectangle(width, height);
  return rect.Perimeter();
 }
}
 
[DataContract]
public class Rectangle
{
 int width;
 int height;
 
 public Rectangle(int width, int height)
 {
  Width = width;
  Height = height;
 }
 
 [DataMember]
 public int Width
 {
  get { return width; }
  set { width = value < 0 ? 0 : value; }
 }
 
 [DataMember]
 public int Height
 {
  get { return height; }
  set { height = value < 0 ? 0 : value; }
 }
 
 public int Area()
 {
  return Height * Width;
 }
 
 public int Perimeter()
 {
  return 2 * (Height + Width);
 }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
 
namespace GeoWFCClient
{
 public partial class Form1 : Form
 {
  public Form1()
  {
   InitializeComponent();
  }
 
  private void calculateButton_Click(object sender, EventArgs e)
  {
   GeometryServiceClient gsclient = new GeometryServiceClient();
 
   /* The overloaded constructor of Rectangle is not present here */
   Rectangle rect = new Rectangle();
 
   rect.Width = Int32.Parse(widthTextBox.Text);
   rect.Height = Int32.Parse(heightTextBox.Text);
 
   areaTextBox.Text = gsclient.GetArea(rect).ToString();
   perimeterTextBox.Text = gsclient.GetPerimeter(rect.Width, rect.Height).ToString();
  }
 }
}